Question

If a number is increased by 4, its square is increased by 64. Find the number

Answer 1

6

Explanation:

(n + 4)^2 = n^2 + 64

n^2 + 8n + 16 = n^2 + 64

8n = 48

n = 6

Answer 2

12

Explanation:

12 - 4 = 8

The square of 8 is 64